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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: New Durability Concept for FRP Reinforcing Bars
Author(s): Andre Weber and Christian Witt Baquero
Publication: Concrete International
Appears on pages(s): 49-53
Keywords: reinforcing bars, FRP, tensile strength, failure
Abstract:A new time-to-failure concept has been developed for glass fiber-reinforced polymer (GFRP) reinforcing bars in concrete. A series of bars is tested in highly alkaline water-saturated concrete at 23, 40, and 60°C (73, 104, and 140°F). The failure line of the material over time is described by a slope and the strength after 1000 hours of loading. Characteristic (5th percentile) values of the tensile strength for a specific design service life and a defined environment can be calculated. The concept allows for potentially much higher design values than do existing codes and guidelines, but without compromising safety. The concept applies to any fiber-reinforced polymer reinforcing bar, and it has been internationally accepted and adopted by fib.
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